./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:17:05,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:17:05,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:17:05,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:17:05,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:17:05,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:17:05,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:17:05,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:17:05,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:17:05,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:17:05,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:17:05,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:17:05,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:17:05,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:17:05,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:17:05,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:17:05,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:17:05,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:17:05,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:17:05,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:17:05,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:17:05,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:17:05,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:17:05,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:17:05,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:17:05,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:17:05,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:17:05,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:17:05,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:17:05,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:17:05,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:17:05,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:17:05,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:17:05,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:17:05,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:17:05,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:17:05,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:17:05,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:17:05,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:17:05,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:17:05,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:17:05,321 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 19:17:05,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:17:05,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:17:05,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:17:05,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:17:05,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:17:05,339 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:17:05,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:17:05,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:17:05,339 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:17:05,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:17:05,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:17:05,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:17:05,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:17:05,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:17:05,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:17:05,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:17:05,341 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:17:05,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:17:05,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:17:05,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:17:05,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:17:05,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:17:05,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:17:05,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:17:05,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:17:05,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:17:05,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:17:05,342 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:17:05,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:17:05,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:17:05,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:17:05,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b [2021-12-06 19:17:05,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:17:05,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:17:05,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:17:05,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:17:05,536 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:17:05,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2021-12-06 19:17:05,578 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/data/a253a342a/20c935d40b2a4dc1a6eb8930e6ded5e5/FLAG7cd49ccf5 [2021-12-06 19:17:06,142 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:17:06,143 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2021-12-06 19:17:06,165 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/data/a253a342a/20c935d40b2a4dc1a6eb8930e6ded5e5/FLAG7cd49ccf5 [2021-12-06 19:17:06,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/data/a253a342a/20c935d40b2a4dc1a6eb8930e6ded5e5 [2021-12-06 19:17:06,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:17:06,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:17:06,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:17:06,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:17:06,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:17:06,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:17:06" (1/1) ... [2021-12-06 19:17:06,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c2f5df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:06, skipping insertion in model container [2021-12-06 19:17:06,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:17:06" (1/1) ... [2021-12-06 19:17:06,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:17:06,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:17:06,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4493,4506] [2021-12-06 19:17:06,918 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4553,4566] [2021-12-06 19:17:07,534 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 19:17:07,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,599 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,600 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,615 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,619 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,619 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,620 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,620 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:07,909 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 19:17:07,910 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 19:17:07,911 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 19:17:07,912 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 19:17:07,913 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 19:17:07,914 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 19:17:07,914 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 19:17:07,915 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 19:17:07,915 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 19:17:07,916 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 19:17:08,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,056 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:17:08,141 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:17:08,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4493,4506] [2021-12-06 19:17:08,154 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4553,4566] [2021-12-06 19:17:08,185 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 19:17:08,199 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,201 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,207 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,208 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,209 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,209 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,210 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,211 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,211 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,212 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 19:17:08,245 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 19:17:08,246 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 19:17:08,247 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 19:17:08,247 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 19:17:08,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 19:17:08,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 19:17:08,249 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 19:17:08,249 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 19:17:08,250 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 19:17:08,277 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,277 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,278 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 19:17:08,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:17:08,465 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:17:08,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08 WrapperNode [2021-12-06 19:17:08,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:17:08,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:17:08,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:17:08,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:17:08,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (1/1) ... [2021-12-06 19:17:08,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (1/1) ... [2021-12-06 19:17:08,590 INFO L137 Inliner]: procedures = 691, calls = 1673, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 695 [2021-12-06 19:17:08,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:17:08,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:17:08,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:17:08,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:17:08,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (1/1) ... [2021-12-06 19:17:08,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (1/1) ... [2021-12-06 19:17:08,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (1/1) ... [2021-12-06 19:17:08,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (1/1) ... [2021-12-06 19:17:08,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (1/1) ... [2021-12-06 19:17:08,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (1/1) ... [2021-12-06 19:17:08,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (1/1) ... [2021-12-06 19:17:08,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:17:08,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:17:08,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:17:08,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:17:08,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (1/1) ... [2021-12-06 19:17:08,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:17:08,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:17:08,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:17:08,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:17:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:17:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-06 19:17:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-06 19:17:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-06 19:17:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-06 19:17:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 19:17:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 19:17:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-06 19:17:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-06 19:17:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:17:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-06 19:17:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-06 19:17:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 19:17:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 19:17:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:17:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:17:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:17:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-06 19:17:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-06 19:17:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:17:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:17:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 19:17:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 19:17:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-06 19:17:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-06 19:17:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-06 19:17:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-06 19:17:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-06 19:17:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-06 19:17:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 19:17:08,716 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 19:17:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-06 19:17:08,716 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-06 19:17:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-06 19:17:08,716 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-06 19:17:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:17:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:17:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 19:17:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 19:17:08,716 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 19:17:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-06 19:17:08,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-06 19:17:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:17:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-06 19:17:08,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-06 19:17:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:17:08,888 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:17:08,890 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:17:09,660 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:17:09,668 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:17:09,668 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 19:17:09,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:17:09 BoogieIcfgContainer [2021-12-06 19:17:09,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:17:09,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:17:09,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:17:09,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:17:09,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:17:06" (1/3) ... [2021-12-06 19:17:09,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35999139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:17:09, skipping insertion in model container [2021-12-06 19:17:09,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:17:08" (2/3) ... [2021-12-06 19:17:09,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35999139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:17:09, skipping insertion in model container [2021-12-06 19:17:09,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:17:09" (3/3) ... [2021-12-06 19:17:09,677 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2021-12-06 19:17:09,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:17:09,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:17:09,724 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:17:09,729 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:17:09,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:17:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-12-06 19:17:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 19:17:09,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:17:09,769 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:17:09,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:17:09,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:17:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2021-12-06 19:17:09,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:17:09,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939131928] [2021-12-06 19:17:09,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:09,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:17:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:17:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:17:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:17:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:17:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:17:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 19:17:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 19:17:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:17:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:17:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 19:17:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:17:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:17:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:17:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:17:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 19:17:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:17:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 19:17:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 19:17:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 19:17:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 19:17:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 19:17:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 19:17:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 19:17:10,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:17:10,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939131928] [2021-12-06 19:17:10,561 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 19:17:10,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508551868] [2021-12-06 19:17:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:10,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:10,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:17:10,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:17:10,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:17:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:10,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:17:10,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:17:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-06 19:17:11,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:17:11,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508551868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:17:11,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:17:11,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:17:11,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476529402] [2021-12-06 19:17:11,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:17:11,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:17:11,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:17:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:17:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:17:11,173 INFO L87 Difference]: Start difference. First operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-06 19:17:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:17:11,530 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2021-12-06 19:17:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:17:11,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 145 [2021-12-06 19:17:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:17:11,545 INFO L225 Difference]: With dead ends: 416 [2021-12-06 19:17:11,545 INFO L226 Difference]: Without dead ends: 206 [2021-12-06 19:17:11,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:17:11,555 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 276 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:17:11,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 786 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:17:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-06 19:17:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-12-06 19:17:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 118 states have internal predecessors, (136), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2021-12-06 19:17:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2021-12-06 19:17:11,617 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2021-12-06 19:17:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:17:11,618 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2021-12-06 19:17:11,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-06 19:17:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2021-12-06 19:17:11,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 19:17:11,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:17:11,624 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:17:11,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:17:11,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:11,826 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:17:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:17:11,827 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2021-12-06 19:17:11,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:17:11,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437936945] [2021-12-06 19:17:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:11,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:17:11,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:17:11,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307933081] [2021-12-06 19:17:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:11,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:11,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:17:11,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:17:11,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:17:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:12,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:17:12,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:17:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-12-06 19:17:12,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:17:12,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:17:12,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437936945] [2021-12-06 19:17:12,415 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:17:12,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307933081] [2021-12-06 19:17:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307933081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:17:12,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:17:12,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:17:12,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558859841] [2021-12-06 19:17:12,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:17:12,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:17:12,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:17:12,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:17:12,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:17:12,418 INFO L87 Difference]: Start difference. First operand 206 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:17:12,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:17:12,450 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2021-12-06 19:17:12,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:17:12,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 160 [2021-12-06 19:17:12,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:17:12,453 INFO L225 Difference]: With dead ends: 410 [2021-12-06 19:17:12,454 INFO L226 Difference]: Without dead ends: 211 [2021-12-06 19:17:12,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:17:12,456 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 10 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:17:12,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 815 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:17:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-06 19:17:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2021-12-06 19:17:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2021-12-06 19:17:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2021-12-06 19:17:12,477 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2021-12-06 19:17:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:17:12,477 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2021-12-06 19:17:12,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:17:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2021-12-06 19:17:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 19:17:12,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:17:12,480 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:17:12,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:17:12,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:12,682 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:17:12,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:17:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2021-12-06 19:17:12,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:17:12,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700178411] [2021-12-06 19:17:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:12,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:17:12,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:17:12,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017803904] [2021-12-06 19:17:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:12,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:12,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:17:12,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:17:12,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:17:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:13,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:17:13,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:17:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 19:17:13,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:17:13,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:17:13,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700178411] [2021-12-06 19:17:13,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:17:13,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017803904] [2021-12-06 19:17:13,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017803904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:17:13,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:17:13,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:17:13,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84375934] [2021-12-06 19:17:13,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:17:13,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:17:13,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:17:13,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:17:13,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:17:13,351 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-06 19:17:13,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:17:13,568 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2021-12-06 19:17:13,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:17:13,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 160 [2021-12-06 19:17:13,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:17:13,570 INFO L225 Difference]: With dead ends: 383 [2021-12-06 19:17:13,570 INFO L226 Difference]: Without dead ends: 208 [2021-12-06 19:17:13,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:17:13,572 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 270 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:17:13,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 777 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:17:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-06 19:17:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-12-06 19:17:13,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2021-12-06 19:17:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2021-12-06 19:17:13,594 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2021-12-06 19:17:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:17:13,595 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2021-12-06 19:17:13,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-06 19:17:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2021-12-06 19:17:13,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 19:17:13,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:17:13,597 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:17:13,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:17:13,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:13,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:17:13,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:17:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2021-12-06 19:17:13,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:17:13,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053368748] [2021-12-06 19:17:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:13,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:17:13,966 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:17:13,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694837173] [2021-12-06 19:17:13,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:17:13,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:17:13,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:17:13,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:17:14,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 19:17:14,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:17:14,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:17:14,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:17:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-12-06 19:17:14,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:17:14,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:17:14,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053368748] [2021-12-06 19:17:14,378 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:17:14,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694837173] [2021-12-06 19:17:14,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694837173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:17:14,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:17:14,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:17:14,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589289229] [2021-12-06 19:17:14,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:17:14,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:17:14,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:17:14,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:17:14,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:17:14,380 INFO L87 Difference]: Start difference. First operand 208 states and 289 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-06 19:17:14,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:17:14,404 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2021-12-06 19:17:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:17:14,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 175 [2021-12-06 19:17:14,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:17:14,407 INFO L225 Difference]: With dead ends: 269 [2021-12-06 19:17:14,407 INFO L226 Difference]: Without dead ends: 213 [2021-12-06 19:17:14,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:17:14,409 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:17:14,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1087 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:17:14,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-06 19:17:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-12-06 19:17:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2021-12-06 19:17:14,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2021-12-06 19:17:14,429 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2021-12-06 19:17:14,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:17:14,430 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2021-12-06 19:17:14,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-06 19:17:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2021-12-06 19:17:14,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-06 19:17:14,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:17:14,433 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:17:14,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:17:14,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:14,634 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:17:14,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:17:14,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2021-12-06 19:17:14,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:17:14,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187236835] [2021-12-06 19:17:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:14,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:17:14,696 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:17:14,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186060044] [2021-12-06 19:17:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:14,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:14,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:17:14,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:17:14,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:17:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:14,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:17:14,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:17:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-06 19:17:15,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:17:15,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:17:15,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187236835] [2021-12-06 19:17:15,171 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:17:15,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186060044] [2021-12-06 19:17:15,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186060044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:17:15,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:17:15,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:17:15,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947904283] [2021-12-06 19:17:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:17:15,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:17:15,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:17:15,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:17:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:17:15,173 INFO L87 Difference]: Start difference. First operand 213 states and 295 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-06 19:17:15,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:17:15,419 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2021-12-06 19:17:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:17:15,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 181 [2021-12-06 19:17:15,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:17:15,422 INFO L225 Difference]: With dead ends: 382 [2021-12-06 19:17:15,422 INFO L226 Difference]: Without dead ends: 213 [2021-12-06 19:17:15,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:17:15,424 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 305 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:17:15,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 936 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:17:15,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-06 19:17:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-12-06 19:17:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (77), 71 states have call predecessors, (77), 70 states have call successors, (77) [2021-12-06 19:17:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2021-12-06 19:17:15,438 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2021-12-06 19:17:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:17:15,439 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2021-12-06 19:17:15,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-06 19:17:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2021-12-06 19:17:15,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-06 19:17:15,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:17:15,441 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:17:15,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 19:17:15,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:15,643 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:17:15,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:17:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2021-12-06 19:17:15,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:17:15,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189735577] [2021-12-06 19:17:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:15,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:17:15,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:17:15,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999936966] [2021-12-06 19:17:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:15,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:15,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:17:15,724 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:17:15,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:17:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:16,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:17:16,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:17:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-12-06 19:17:16,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:17:16,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:17:16,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189735577] [2021-12-06 19:17:16,198 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:17:16,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999936966] [2021-12-06 19:17:16,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999936966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:17:16,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:17:16,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:17:16,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446801281] [2021-12-06 19:17:16,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:17:16,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:17:16,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:17:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:17:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:17:16,200 INFO L87 Difference]: Start difference. First operand 213 states and 290 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:17:16,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:17:16,387 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2021-12-06 19:17:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:17:16,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 195 [2021-12-06 19:17:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:17:16,390 INFO L225 Difference]: With dead ends: 379 [2021-12-06 19:17:16,390 INFO L226 Difference]: Without dead ends: 211 [2021-12-06 19:17:16,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:17:16,391 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 304 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:17:16,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 931 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:17:16,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-06 19:17:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-12-06 19:17:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 122 states have internal predecessors, (140), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2021-12-06 19:17:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2021-12-06 19:17:16,406 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2021-12-06 19:17:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:17:16,407 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2021-12-06 19:17:16,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:17:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2021-12-06 19:17:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-06 19:17:16,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:17:16,409 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:17:16,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:17:16,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:16,611 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:17:16,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:17:16,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2021-12-06 19:17:16,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:17:16,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299575881] [2021-12-06 19:17:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:16,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:17:16,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:17:16,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761364005] [2021-12-06 19:17:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:16,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:16,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:17:16,723 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:17:16,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:17:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:17,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:17:17,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:17:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2021-12-06 19:17:17,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:17:17,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:17:17,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299575881] [2021-12-06 19:17:17,203 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:17:17,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761364005] [2021-12-06 19:17:17,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761364005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:17:17,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:17:17,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:17:17,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009051180] [2021-12-06 19:17:17,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:17:17,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:17:17,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:17:17,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:17:17,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:17:17,205 INFO L87 Difference]: Start difference. First operand 211 states and 283 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-12-06 19:17:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:17:17,231 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2021-12-06 19:17:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:17:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 210 [2021-12-06 19:17:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:17:17,233 INFO L225 Difference]: With dead ends: 269 [2021-12-06 19:17:17,233 INFO L226 Difference]: Without dead ends: 220 [2021-12-06 19:17:17,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:17:17,234 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 3 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:17:17,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1366 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:17:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-06 19:17:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2021-12-06 19:17:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 123 states have (on average 1.1544715447154472) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2021-12-06 19:17:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2021-12-06 19:17:17,245 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2021-12-06 19:17:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:17:17,245 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2021-12-06 19:17:17,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-12-06 19:17:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2021-12-06 19:17:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 19:17:17,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:17:17,247 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:17:17,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:17:17,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 19:17:17,449 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:17:17,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:17:17,451 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2021-12-06 19:17:17,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:17:17,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633739871] [2021-12-06 19:17:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:17,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:17:17,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:17:17,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428371393] [2021-12-06 19:17:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:17,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:17:17,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:17:17,559 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:17:17,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:17:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:17:17,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 124 conjunts are in the unsatisfiable core [2021-12-06 19:17:17,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:17:17,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:17:18,422 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_997 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_997))) (exists ((v_ArrVal_996 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_996)))) is different from true [2021-12-06 19:17:18,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:17:18,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:17:20,525 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1000 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_999 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_999))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1000))))) is different from true [2021-12-06 19:17:52,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:17:52,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:17:52,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:17:52,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:18:33,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-06 19:18:33,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-06 19:18:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 340 proven. 37 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-06 19:18:33,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:18:38,710 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1015 Int) (v_ArrVal_1014 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_30| Int)) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_30| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_30|) 0 v_ArrVal_1014))) (.cse2 (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_30| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_30|) 0 v_ArrVal_1015))) (.cse1 (+ 32 |c_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.offset|))) (or (< (select (select .cse0 |c_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base|) .cse1) 0) (= (let ((.cse3 (+ 32 |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.offset|))) (+ (select (select .cse2 |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base|) .cse3) (select (select .cse0 |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base|) .cse3))) 0) (< (select (select .cse2 |c_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base|) .cse1) 0)))) is different from false [2021-12-06 19:18:38,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:18:38,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633739871] [2021-12-06 19:18:38,713 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:18:38,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428371393] [2021-12-06 19:18:38,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428371393] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:18:38,713 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:18:38,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-12-06 19:18:38,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073671300] [2021-12-06 19:18:38,713 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 19:18:38,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 19:18:38,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:18:38,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 19:18:38,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=955, Unknown=17, NotChecked=192, Total=1260 [2021-12-06 19:18:38,715 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 27 states, 25 states have (on average 3.8) internal successors, (95), 26 states have internal predecessors, (95), 11 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 10 states have call predecessors, (31), 11 states have call successors, (31) [2021-12-06 19:19:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:19:43,861 INFO L93 Difference]: Finished difference Result 437 states and 603 transitions. [2021-12-06 19:19:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 19:19:43,862 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.8) internal successors, (95), 26 states have internal predecessors, (95), 11 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 10 states have call predecessors, (31), 11 states have call successors, (31) Word has length 226 [2021-12-06 19:19:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:19:43,864 INFO L225 Difference]: With dead ends: 437 [2021-12-06 19:19:43,864 INFO L226 Difference]: Without dead ends: 253 [2021-12-06 19:19:43,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 306 SyntacticMatches, 12 SemanticMatches, 48 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 143.4s TimeCoverageRelationStatistics Valid=198, Invalid=1934, Unknown=42, NotChecked=276, Total=2450 [2021-12-06 19:19:43,866 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 125 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1451 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:19:43,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 1852 Invalid, 3106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1573 Invalid, 0 Unknown, 1451 Unchecked, 0.9s Time] [2021-12-06 19:19:43,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-12-06 19:19:43,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 239. [2021-12-06 19:19:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 139 states have (on average 1.1510791366906474) internal successors, (160), 142 states have internal predecessors, (160), 76 states have call successors, (76), 19 states have call predecessors, (76), 23 states have return successors, (109), 77 states have call predecessors, (109), 75 states have call successors, (109) [2021-12-06 19:19:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 345 transitions. [2021-12-06 19:19:43,881 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 345 transitions. Word has length 226 [2021-12-06 19:19:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:19:43,882 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 345 transitions. [2021-12-06 19:19:43,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.8) internal successors, (95), 26 states have internal predecessors, (95), 11 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 10 states have call predecessors, (31), 11 states have call successors, (31) [2021-12-06 19:19:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 345 transitions. [2021-12-06 19:19:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-12-06 19:19:43,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:19:43,884 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:19:43,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 19:19:44,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:19:44,085 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:19:44,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:19:44,086 INFO L85 PathProgramCache]: Analyzing trace with hash -671574388, now seen corresponding path program 2 times [2021-12-06 19:19:44,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:19:44,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134033276] [2021-12-06 19:19:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:19:44,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:19:44,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:19:44,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803117127] [2021-12-06 19:19:44,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:19:44,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:19:44,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:19:44,130 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:19:44,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:19:45,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:19:45,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:19:45,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 134 conjunts are in the unsatisfiable core [2021-12-06 19:19:45,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:19:45,386 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 19:19:45,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:19:45,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:19:45,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:19:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 324 proven. 30 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-06 19:19:47,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:19:48,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:19:48,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134033276] [2021-12-06 19:19:48,168 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:19:48,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803117127] [2021-12-06 19:19:48,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803117127] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:19:48,168 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:19:48,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-12-06 19:19:48,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117567863] [2021-12-06 19:19:48,169 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 19:19:48,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 19:19:48,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:19:48,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 19:19:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 19:19:48,171 INFO L87 Difference]: Start difference. First operand 239 states and 345 transitions. Second operand has 34 states, 32 states have (on average 3.09375) internal successors, (99), 31 states have internal predecessors, (99), 11 states have call successors, (31), 6 states have call predecessors, (31), 12 states have return successors, (32), 12 states have call predecessors, (32), 10 states have call successors, (32) [2021-12-06 19:19:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:19:51,166 INFO L93 Difference]: Finished difference Result 539 states and 839 transitions. [2021-12-06 19:19:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 19:19:51,167 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 3.09375) internal successors, (99), 31 states have internal predecessors, (99), 11 states have call successors, (31), 6 states have call predecessors, (31), 12 states have return successors, (32), 12 states have call predecessors, (32), 10 states have call successors, (32) Word has length 250 [2021-12-06 19:19:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:19:51,169 INFO L225 Difference]: With dead ends: 539 [2021-12-06 19:19:51,169 INFO L226 Difference]: Without dead ends: 360 [2021-12-06 19:19:51,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 219 SyntacticMatches, 12 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=396, Invalid=3636, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 19:19:51,172 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 195 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 3775 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 4371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:19:51,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 3302 Invalid, 4371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3775 Invalid, 0 Unknown, 503 Unchecked, 2.3s Time] [2021-12-06 19:19:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-06 19:19:51,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 278. [2021-12-06 19:19:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 162 states have (on average 1.1419753086419753) internal successors, (185), 166 states have internal predecessors, (185), 88 states have call successors, (88), 22 states have call predecessors, (88), 27 states have return successors, (147), 89 states have call predecessors, (147), 87 states have call successors, (147) [2021-12-06 19:19:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 420 transitions. [2021-12-06 19:19:51,191 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 420 transitions. Word has length 250 [2021-12-06 19:19:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:19:51,192 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 420 transitions. [2021-12-06 19:19:51,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 3.09375) internal successors, (99), 31 states have internal predecessors, (99), 11 states have call successors, (31), 6 states have call predecessors, (31), 12 states have return successors, (32), 12 states have call predecessors, (32), 10 states have call successors, (32) [2021-12-06 19:19:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 420 transitions. [2021-12-06 19:19:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-06 19:19:51,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:19:51,194 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:19:51,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 19:19:51,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:19:51,396 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:19:51,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:19:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1739835966, now seen corresponding path program 3 times [2021-12-06 19:19:51,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:19:51,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460414229] [2021-12-06 19:19:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:19:51,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:19:51,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:19:51,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553817693] [2021-12-06 19:19:51,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:19:51,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:19:51,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:19:51,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:19:51,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 19:19:52,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 19:19:52,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:19:52,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 19:19:52,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:19:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-12-06 19:19:53,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:19:53,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:19:53,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460414229] [2021-12-06 19:19:53,052 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:19:53,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553817693] [2021-12-06 19:19:53,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553817693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:19:53,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:19:53,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 19:19:53,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014716737] [2021-12-06 19:19:53,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:19:53,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:19:53,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:19:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:19:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:19:53,054 INFO L87 Difference]: Start difference. First operand 278 states and 420 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-06 19:19:53,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:19:53,239 INFO L93 Difference]: Finished difference Result 461 states and 682 transitions. [2021-12-06 19:19:53,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:19:53,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 244 [2021-12-06 19:19:53,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:19:53,250 INFO L225 Difference]: With dead ends: 461 [2021-12-06 19:19:53,250 INFO L226 Difference]: Without dead ends: 272 [2021-12-06 19:19:53,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:19:53,252 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 11 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:19:53,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2954 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:19:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-12-06 19:19:53,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2021-12-06 19:19:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 158 states have (on average 1.139240506329114) internal successors, (180), 162 states have internal predecessors, (180), 84 states have call successors, (84), 22 states have call predecessors, (84), 27 states have return successors, (135), 85 states have call predecessors, (135), 83 states have call successors, (135) [2021-12-06 19:19:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 399 transitions. [2021-12-06 19:19:53,267 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 399 transitions. Word has length 244 [2021-12-06 19:19:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:19:53,267 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 399 transitions. [2021-12-06 19:19:53,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-06 19:19:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 399 transitions. [2021-12-06 19:19:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-12-06 19:19:53,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:19:53,270 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:19:53,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 19:19:53,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:19:53,470 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:19:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:19:53,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2118688120, now seen corresponding path program 4 times [2021-12-06 19:19:53,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:19:53,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704046614] [2021-12-06 19:19:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:19:53,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:19:53,528 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:19:53,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198233450] [2021-12-06 19:19:53,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:19:53,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:19:53,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:19:53,529 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:19:53,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 19:19:53,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:19:53,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:19:53,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 19:19:53,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:19:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-12-06 19:19:54,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:19:54,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:19:54,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704046614] [2021-12-06 19:19:54,075 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:19:54,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198233450] [2021-12-06 19:19:54,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198233450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:19:54,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:19:54,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 19:19:54,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402768070] [2021-12-06 19:19:54,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:19:54,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:19:54,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:19:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:19:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:19:54,076 INFO L87 Difference]: Start difference. First operand 270 states and 399 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-06 19:19:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:19:54,281 INFO L93 Difference]: Finished difference Result 471 states and 690 transitions. [2021-12-06 19:19:54,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:19:54,287 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) Word has length 238 [2021-12-06 19:19:54,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:19:54,289 INFO L225 Difference]: With dead ends: 471 [2021-12-06 19:19:54,289 INFO L226 Difference]: Without dead ends: 250 [2021-12-06 19:19:54,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:19:54,290 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 11 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:19:54,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2943 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:19:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-12-06 19:19:54,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-12-06 19:19:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 147 states have (on average 1.1496598639455782) internal successors, (169), 151 states have internal predecessors, (169), 76 states have call successors, (76), 20 states have call predecessors, (76), 25 states have return successors, (118), 77 states have call predecessors, (118), 75 states have call successors, (118) [2021-12-06 19:19:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 363 transitions. [2021-12-06 19:19:54,304 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 363 transitions. Word has length 238 [2021-12-06 19:19:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:19:54,304 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 363 transitions. [2021-12-06 19:19:54,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-06 19:19:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 363 transitions. [2021-12-06 19:19:54,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-06 19:19:54,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:19:54,306 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:19:54,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 19:19:54,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:19:54,507 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:19:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:19:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash -905056813, now seen corresponding path program 1 times [2021-12-06 19:19:54,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:19:54,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595429719] [2021-12-06 19:19:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:19:54,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:19:54,550 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:19:54,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362252336] [2021-12-06 19:19:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:19:54,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:19:54,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:19:54,551 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:19:54,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 19:19:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:19:54,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 19:19:54,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:19:55,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:19:55,093 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 19:19:55,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 19:19:57,180 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1620 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1620)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-06 19:20:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-12-06 19:20:15,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:20:15,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:20:15,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595429719] [2021-12-06 19:20:15,553 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:20:15,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362252336] [2021-12-06 19:20:15,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362252336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:20:15,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:20:15,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 19:20:15,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228444074] [2021-12-06 19:20:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:20:15,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:20:15,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:20:15,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:20:15,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=7, NotChecked=32, Total=342 [2021-12-06 19:20:15,555 INFO L87 Difference]: Start difference. First operand 249 states and 363 transitions. Second operand has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2021-12-06 19:20:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:20:16,289 INFO L93 Difference]: Finished difference Result 459 states and 669 transitions. [2021-12-06 19:20:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 19:20:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 232 [2021-12-06 19:20:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:20:16,291 INFO L225 Difference]: With dead ends: 459 [2021-12-06 19:20:16,291 INFO L226 Difference]: Without dead ends: 262 [2021-12-06 19:20:16,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=66, Invalid=393, Unknown=7, NotChecked=40, Total=506 [2021-12-06 19:20:16,292 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 104 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 953 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:20:16,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1520 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1162 Invalid, 0 Unknown, 953 Unchecked, 0.6s Time] [2021-12-06 19:20:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-06 19:20:16,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 252. [2021-12-06 19:20:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 149 states have (on average 1.1476510067114094) internal successors, (171), 153 states have internal predecessors, (171), 76 states have call successors, (76), 21 states have call predecessors, (76), 26 states have return successors, (118), 77 states have call predecessors, (118), 75 states have call successors, (118) [2021-12-06 19:20:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 365 transitions. [2021-12-06 19:20:16,305 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 365 transitions. Word has length 232 [2021-12-06 19:20:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:20:16,305 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 365 transitions. [2021-12-06 19:20:16,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2021-12-06 19:20:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 365 transitions. [2021-12-06 19:20:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-06 19:20:16,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:20:16,307 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:20:16,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 19:20:16,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 19:20:16,508 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:20:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:20:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1304057108, now seen corresponding path program 1 times [2021-12-06 19:20:16,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:20:16,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078956407] [2021-12-06 19:20:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:20:16,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:20:16,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:20:16,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795280497] [2021-12-06 19:20:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:20:16,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:20:16,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:20:16,550 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:20:16,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 19:20:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:20:16,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:20:16,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:20:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-12-06 19:20:17,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:20:17,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:20:17,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078956407] [2021-12-06 19:20:17,179 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:20:17,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795280497] [2021-12-06 19:20:17,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795280497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:20:17,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:20:17,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:20:17,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174901375] [2021-12-06 19:20:17,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:20:17,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:20:17,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:20:17,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:20:17,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:20:17,181 INFO L87 Difference]: Start difference. First operand 252 states and 365 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-06 19:20:17,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:20:17,412 INFO L93 Difference]: Finished difference Result 494 states and 763 transitions. [2021-12-06 19:20:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:20:17,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 228 [2021-12-06 19:20:17,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:20:17,416 INFO L225 Difference]: With dead ends: 494 [2021-12-06 19:20:17,416 INFO L226 Difference]: Without dead ends: 262 [2021-12-06 19:20:17,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:20:17,418 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 7 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:20:17,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1051 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:20:17,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-06 19:20:17,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 254. [2021-12-06 19:20:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 151 states have (on average 1.1456953642384107) internal successors, (173), 155 states have internal predecessors, (173), 76 states have call successors, (76), 21 states have call predecessors, (76), 26 states have return successors, (118), 77 states have call predecessors, (118), 75 states have call successors, (118) [2021-12-06 19:20:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 367 transitions. [2021-12-06 19:20:17,443 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 367 transitions. Word has length 228 [2021-12-06 19:20:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:20:17,444 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 367 transitions. [2021-12-06 19:20:17,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-06 19:20:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 367 transitions. [2021-12-06 19:20:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-06 19:20:17,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:20:17,446 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:20:17,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 19:20:17,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 19:20:17,647 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:20:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:20:17,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1642776618, now seen corresponding path program 1 times [2021-12-06 19:20:17,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:20:17,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209035121] [2021-12-06 19:20:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:20:17,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:20:17,708 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:20:17,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119188905] [2021-12-06 19:20:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:20:17,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:20:17,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:20:17,709 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:20:17,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 19:20:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:20:18,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 3061 conjuncts, 148 conjunts are in the unsatisfiable core [2021-12-06 19:20:18,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:20:18,102 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:20:18,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 19:20:18,377 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 19:20:18,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:20:18,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:20:18,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:20:18,567 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1989 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1989))) (exists ((v_ArrVal_1988 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1988) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 19:20:19,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:20:19,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-12-06 19:20:19,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:20:19,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-12-06 19:20:19,017 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 19:20:19,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:20:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 208 proven. 8 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-12-06 19:20:19,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:20:21,550 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2010 Int) (v_ArrVal_2011 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_63| Int)) (let ((.cse0 (+ 32 |c_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.offset|))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_63| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_63|) 0 v_ArrVal_2011)) |c_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_63| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_63|) 0 v_ArrVal_2010)) |c_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base|) .cse0) 0))))) is different from false [2021-12-06 19:20:21,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:20:21,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209035121] [2021-12-06 19:20:21,552 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:20:21,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119188905] [2021-12-06 19:20:21,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119188905] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:20:21,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:20:21,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-12-06 19:20:21,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759946679] [2021-12-06 19:20:21,553 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 19:20:21,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 19:20:21,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:20:21,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 19:20:21,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=578, Unknown=7, NotChecked=98, Total=756 [2021-12-06 19:20:21,554 INFO L87 Difference]: Start difference. First operand 254 states and 367 transitions. Second operand has 24 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2021-12-06 19:20:22,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:20:22,740 INFO L93 Difference]: Finished difference Result 518 states and 753 transitions. [2021-12-06 19:20:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 19:20:22,740 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) Word has length 228 [2021-12-06 19:20:22,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:20:22,743 INFO L225 Difference]: With dead ends: 518 [2021-12-06 19:20:22,743 INFO L226 Difference]: Without dead ends: 284 [2021-12-06 19:20:22,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 322 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=158, Invalid=1232, Unknown=24, NotChecked=146, Total=1560 [2021-12-06 19:20:22,745 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 105 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 3675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1889 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:20:22,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 1737 Invalid, 3675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1688 Invalid, 0 Unknown, 1889 Unchecked, 0.9s Time] [2021-12-06 19:20:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-06 19:20:22,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 266. [2021-12-06 19:20:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 159 states have (on average 1.1383647798742138) internal successors, (181), 164 states have internal predecessors, (181), 77 states have call successors, (77), 23 states have call predecessors, (77), 29 states have return successors, (137), 78 states have call predecessors, (137), 76 states have call successors, (137) [2021-12-06 19:20:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 395 transitions. [2021-12-06 19:20:22,766 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 395 transitions. Word has length 228 [2021-12-06 19:20:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:20:22,766 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 395 transitions. [2021-12-06 19:20:22,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2021-12-06 19:20:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 395 transitions. [2021-12-06 19:20:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-12-06 19:20:22,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:20:22,768 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:20:22,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 19:20:22,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 19:20:22,970 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:20:22,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:20:22,972 INFO L85 PathProgramCache]: Analyzing trace with hash -529367438, now seen corresponding path program 2 times [2021-12-06 19:20:22,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:20:22,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822513176] [2021-12-06 19:20:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:20:22,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:20:23,056 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:20:23,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594160783] [2021-12-06 19:20:23,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:20:23,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:20:23,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:20:23,057 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:20:23,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 19:20:24,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:20:24,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:20:24,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-06 19:20:24,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:20:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 344 proven. 6 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-06 19:20:25,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:20:27,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:20:27,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822513176] [2021-12-06 19:20:27,561 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:20:27,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594160783] [2021-12-06 19:20:27,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594160783] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:20:27,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:20:27,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-12-06 19:20:27,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306518982] [2021-12-06 19:20:27,561 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 19:20:27,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 19:20:27,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:20:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 19:20:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=438, Unknown=1, NotChecked=0, Total=506 [2021-12-06 19:20:27,563 INFO L87 Difference]: Start difference. First operand 266 states and 395 transitions. Second operand has 14 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 7 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-06 19:20:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:20:29,022 INFO L93 Difference]: Finished difference Result 470 states and 691 transitions. [2021-12-06 19:20:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 19:20:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 7 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 240 [2021-12-06 19:20:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:20:29,024 INFO L225 Difference]: With dead ends: 470 [2021-12-06 19:20:29,024 INFO L226 Difference]: Without dead ends: 278 [2021-12-06 19:20:29,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 310 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=160, Invalid=961, Unknown=1, NotChecked=0, Total=1122 [2021-12-06 19:20:29,026 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 98 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:20:29,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 1440 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1538 Invalid, 0 Unknown, 198 Unchecked, 1.1s Time] [2021-12-06 19:20:29,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-06 19:20:29,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2021-12-06 19:20:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 162 states have (on average 1.1358024691358024) internal successors, (184), 167 states have internal predecessors, (184), 77 states have call successors, (77), 24 states have call predecessors, (77), 30 states have return successors, (136), 78 states have call predecessors, (136), 76 states have call successors, (136) [2021-12-06 19:20:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 397 transitions. [2021-12-06 19:20:29,040 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 397 transitions. Word has length 240 [2021-12-06 19:20:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:20:29,041 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 397 transitions. [2021-12-06 19:20:29,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 7 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-06 19:20:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 397 transitions. [2021-12-06 19:20:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-06 19:20:29,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:20:29,043 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:20:29,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-06 19:20:29,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:20:29,244 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:20:29,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:20:29,246 INFO L85 PathProgramCache]: Analyzing trace with hash -561819810, now seen corresponding path program 3 times [2021-12-06 19:20:29,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:20:29,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478557825] [2021-12-06 19:20:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:20:29,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:20:29,327 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:20:29,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607453683] [2021-12-06 19:20:29,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:20:29,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:20:29,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:20:29,328 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:20:29,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04884854-a2d7-4682-b3b3-92ca9db9b719/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process